sammylox sammylox

28-04-2014
Mathematics

Answered

Which equation is shown on the graph?
A.y = 2x
B.y = x + 2
C.y = 2x + 2
D.y = x – 2

Which equation is shown on the graph? A. y = 2x B. y = x + 2 C. y = 2x + 2 D. y = x 2 class=

Verified Answer :

Anonymous Anonymous

02-05-2014

\(y=mx+b\\\\A(0;\ 2);\ B(-2;\ 0)\\\\for\ x=2\to y=2\\\\substitute:m\cdot0+b=2\to b=2\\\\y=mx+2\\\\for\ x=-2\to y=0\\\\substitute:-2m+2=0\to-2m=-2\ \ \ /:(-2)\to m=1\\\\Answer:y=x+2\ (B)\)

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